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#11
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Does old ohardware work with new oses?
Paul wrote:
Paul in Houston TX wrote: Paul wrote: Paul in Houston TX wrote: J. P. Gilliver (John) wrote: Another point is that, unless towards the end of the '9x period, they probably connect via the parallel port: virtually all more recent laptops/netbooks don't have those, and I've been told even some desktops don't. (You can get USB-to-parallel adapters - "cables", but there is some electronics in them - but they vary, and may not work with all old hardware.) Good point! My 2 yr old MB does not have parallel or serial ports. Tried a USB to parallel adapter with my old HP printer / scanner and it would not work. Ended up getting a pcie parallel card which works great. Cannot use my external USR phone modem because it requires a serial port and the MB does not have any available pcie ports. The MB does not have a built in analog modem, so no phoning for me. Have you checked for a 2x5 serial header ? I bought a USB to RS232 adapter, used it for a day or so, when I happened to be looking inside the computer case and noticed a 2x5. I went back and checked the manual, and damn if the motherboard didn't have a single serial port on it. (That 2x5 has a different pattern than the USB headers.) The reason things like that can show up, is due to the continued use of SuperI/O chips. This is more popular on home-build PCs, where the manufacturer wants to continue to have a hardware voltage monitor (for Speedfan etc). One of the bonuses, is the SuperI/O has a serial port. The manufacturer still has to pay for an RS232 interface chip, to convert logic levels into +/-25V max serial I/O. So they still have th throw a TI 75232 onto the board, to make it work. I uses an existing ribbon cable, plus a DB-9 I still had sitting here, made an adapter cable, and that's my serial port. You can also get serial ports on plugin cards, with assignable addressing. So that the port will be recognized at the usual address. The USB to parallel port, is limited to one flavor by the nature of the software stack. It isn't a hardware issue as such - there's no way to support all possible protocols, with the way the USB class works for the thing now. It is really a "USB to printer" design, where the printer is a subset of all possible flavors. Whereas the PCI Express version, the stack is not limited in that way for it. So more stuff can work. (Even my JTAG programmer cable would work on there. I have a JTAG cable that runs off a parallel port. And my PCI Express card drives that. I've tested it.) Paul It's a GA-X58A-UDR3. Has everything else but serial header. I have an old AMD single core computer that I use with a USR external modem. Company laptop #1 has a built in software modem that connects to around 10% of the scada equipment so I have to use the old comp and USR external for the other 90%, which is a pain since the data belongs on laptop #1. What I really need is a USB modem that I can use with the company laptop #2 that does not have anything except usb ports. My usb to serial converter does not work with an external modem however it does work with direct connect RS-232 to the scada equipment. Your motherboard does have a serial port, but you can't use it. The IT8720F has a serial port. It would need a TI 75232 level shifter, to be ready from a hardware perspective, but the kicker is, it cannot work without a BIOS code change. Someone with a configuration tool might be able to turn it on. They can't leave it turned on, because a user might mistake it for working hardware, so it "disappears" from the address space, BIOS table and so on. (Block diagram if IT8720F - I'm guessing that's the one...) http://ts3.mm.bing.net/th?id=JN.UV6i...g&pid=15.1&P=0 And it's funny, as they included a Firewire chip, which puts the board in an upper tier from a hardware interface point of view. If they could pop for a Firewire chip, they could pop for a level shifter. I can't begin to guess why the modem doesn't work. Any USB to serial, should have the full DB-9 set of interface signals. While they do make USB to TX/RX/GND TTL level adapters for cell phones, I doubt they'd bother doing one with RS232 levels with that limitation, as there'd be practically no use for it. You really need the flow control, to get the best possible performance from a bad situation. Perhaps if you had one of those LED gizmos, that monitors serial port signal levels, you could figure it out. Paul Thanks Paul. I was thinking the same thing about the Firewire chip. The serial port LED lights are a good idea. I think I have one around here somewhere. |
#12
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Does old ohardware work with new oses?
On Sat, 16 May 2015 19:45:42 -0400, micky
wrote: On Sat, 16 May 2015 16:33:15 -0700, "Ken Blake, MVP" wrote: On Sat, 16 May 2015 19:26:28 -0400, micky wrote: Are color printers and a separate scanner, designed for win98, I think, likely to still work with XP or later versions of Windows? If so I would give them to a hamfest that could give them away at the sponsor's table, or as part of the door prizes. They are new, in the box. (I know I could look each of them up for a specific answer, but not time right now and the hamfest is in 8 days.) Likely? Probably not. But the only way to be sure is to check the manufacturer's web site to be whether Windows XP (or later) drivers exist for it. Boohoo. Maybe I'll have time before the next hamfest in a couple months. It's probably bigger anyhow. Thanks I didn't have time to say that I was out of town from Sunday the 17th to Friday the 22nd (at my niece's college graduation, Phi Beta Kappa, Summa cum laude, plus she has a job and an apartment.) I called the hamfest guy when I got back and said he could give them out as doorprizes, hourly raffle. He said they had people who still used '98 and that would be fine. Byt I only got 15 hours sleep in 5 nights while gone, and a bad night's sleep on Friday, and I forgot to set the alarm Satuday night. Woke up at 1PM Sunday, watching the Indy 500 and wondering if that will interfere with taping Rawhide, but that's on Saturday. What day is it now? Sunday? Is it too late to go the hamfest? Oh, yeah, 1PM, I guess it is. Another opportunity missed. Not so many hamfests anymore but I'll try for one later this summer. I'll print what Brandon wrote -- which doesn't surprise me much -- and tape it to the box. Thanks. |
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